CMMG Banshee 300 Mk4 .22 LR AR Style Semi Auto Rimfire Pistol 4.5″ Barrel 25 Rounds RML4 M-LOK Handguard CMMG Micro/CQB RipBrace Midnight Bronze Finish


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  • Return to manufacturer for warranty service.
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For over a decade CMMG has remained committed to producing some of the best AR platform firearms in the industry. The Banshee 300 is the ideal multi-purpose firearm from CMMG with all of the advanced features you’re looking for in an AR style pistol. Chambered in the ever popular .22 Long Rifle rimfire cartridge, this AR style pistol features a 4.5″ 4140 steel barrel and an aluminum RML4 M-LOK hand guard. It comes with a CMMG Micro/CQB pistol brace and a 5 position enhanced receiver extension for the ultimate in control and a custom fit. This is a great quality rimfire AR that will provide you with years of awesome performance. The .22 LR cartridge is an excellent choice that offers you a fun day at the range, and it’s suitable for small game hunting! Whether you like plinking for recreational shooting, or need a reliable gun for varmint and pest control, the Mk4 Banshee 300 from CMMG is the only gun you’ll need!

Specifications and Features:
CMMG Inc. Banshee 300 Mk4 22A5B62-MB
AR15 Style Semi Automatic Rimfire Pistol
.22 Long Rifle
25 Round CMMG Magazine
4.5″ 4140 Steel Medium Taper Barrel
Threaded Muzzle 1/2×28 TPI with KAK Slim Flash Can
Forged 7075-T6 Aluminum Receivers
CMMG Oversized Ambidextrous Charging Handle
CMMG Ambidextrous Safety Selector
Single Stage Mil-Spec Trigger
CMMG RML4 M-LOK Handguard
Full Length Picatinny Top Rail
Magpul MOE Pistol Grip
CMMG Micro/CQB RipBrace Pistol Brace
5 Position Enhanced Receiver Extension
Receiver End Plate with Ambidextrous Sling Loops
Midnight Bronze Cerakote Finish
Length 20″
Weight 4 lbs 5 oz
Made In The USA

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